What's the national speed limit on a single carriageway road?
- A 50 mph
- B 60 mph
- C 40 mph
- D 70 mph
Why this is the answer
If you’re travelling on a dual carriageway that becomes a single carriageway road, reduce your speed gradually so that you’re not exceeding the limit as you enter. There might not be a sign to remind you of the limit, so make sure you know the speed limits for different types of road and vehicle.
Why the other answers don't fit
- A
- 50 mph — A signed limit, not a national one.
- C
- 40 mph — Also a signed limit rather than a national figure.
- D
- 70 mph — That is the figure for a dual carriageway or a motorway.
Where this comes from
- Driving: the essential skills — section 6
- The Highway Code — page 48
Rule numbers link to The Highway Code on gov.uk.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Car , Motorcycle
More questions on Road and traffic signs
- A police car is following you. What should you do if the police officer flashes the headlights and points to the left?
- At traffic lights, what does it mean when the amber light shows on its own?
- How can you identify traffic signs that give orders?
- How should the right-hand lane of a three-lane motorway be used?
- How should you give an arm signal to turn left?
- How will a police officer in a patrol vehicle signal for you to stop?
- In winter, road signs can become covered by snow. What does this sign mean?
- Other drivers may sometimes flash their headlights at you. What's the official meaning of this signal?